Scientists observe mitochondrial mutation carriers to unlock disease secrets
NCT ID NCT01532791
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study follows 300 people who carry a specific mitochondrial DNA mutation (m.3243A>G) that can cause symptoms like migraines, seizures, and hearing loss. Researchers will use brain scans, muscle tests, and cognitive assessments to track how the disease progresses over time. No treatment is given; the goal is to gather information that may help develop future therapies.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could help doctors better understand mitochondrial diseases and pave the way for future treatments.
- What could go wrong
- This is an observational study with no treatment, so it will not directly improve symptoms. It may take years to yield useful results.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 300 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2004
- Expected to finish
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Jul 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Carriers of the m.3243A\>G mitochondrial DNA point mutation, and their maternal relatives (carrier status documentation not required.). All patients suspected of having an mtDNA point mutation regardless of age, health status, gender, race, or ethnicity will be evaluated. The minimal age of entry into the study will be 4 years or older. We will also evaluate controls (often these are married in relatives).
- Ages
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4 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Known carrier of a the m.3243 A\>G mitochondrial mutation, ,or Maternally related to someone who carries the m.3243A\>G mitochondrial mutation. A family member who is not maternally related to someone who carries the m.3243A\>G mitochondrial mutation Exclusion Criteria: * Younger than 4 years of age * No confirmed m.3243 A\>G mitochondrial DNA mutation in the family.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Columbia University
RECRUITINGNew York, New York, 10032, United States